Radio Receivers
In a ratio detector

stabilization against signal strength variations is provided
the output is twice that obtainable from a similar phase discriminator
the circuit is the same as in a discriminator, except that the diodes are reversed
the linearity is worse than in phase discriminator

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Radio Receivers
Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that

The receiver cannot use a phase comparator for AFC
Production of AGC is a rather complicated process
The transmission is not compatible with A3E
Adjacent-channel rejection is more difficult

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Radio Receivers
In a radio receiver with simple AGC

The audio stage gain is normally controlled by the AGC
The faster the AGC time constant the more accurate the output
An increase in signal strength produces more AGC
The highest AGC voltage is produced

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